Elissawi K. Method of improving the sustainability of network synchronization of a modern multiservice macro network

The work is devoted to the development of methods for improving the sustainability of network synchronization of a modern multiservice macro network, the use of which will allow a 25% increase in the reliability and sustainability of network synchronization of a multiservice macro network when emergency situations arise during the provision of services and improve the efficiency of network synchronization planning and the use of algorithms of network elements taking into account probability characteristics events occurring in network synchronization by 10-13%. In the work: - а method for determining the stability of the network synchronization for each of the fragments of the synchronization network under the given initial conditions: failure rate, recovery intensity and initial conditions in which the system was and taking into account the following parameters: - algorithm of functioning of synchronization node; - method of setting priorities for input interfaces (ports) of synchronization; - setting quality levels of synchronization signals; - network fragment topology. - the method of functioning of a network element on the basis of change of priorities and introduction of the mechanism of the programmed delay in algorithm of formation of messages on the synchronization status allows to appear emergence of time loops in the closed topological structures of a multiservice macronetwork is improved; - the method of reconfiguration of network synchronization in IP / MPLS networks is improved, which will increase the efficiency of planning and use of algorithms for functioning of network elements taking into account the probabilistic characteristics of events occurring in the synchronization network by 10-13%; - it is established that the use of an advanced method of dynamic adaptation of the synchronization tree based on a closed topology is more appropriate than the use of existing algorithms on this topology and will increase by 25% network reliability and stability in case of emergencies. The quality of functioning of the fragment of the synchronization network, in which the network elements operate according to the algorithm with dynamic adaptation of the synchronization tree can achieve the quality of functioning of the fragment with the ideal algorithm, the theoretical limit of quality of functioning can be reached.